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Mental Addition Worksheet for Class 2 and 3

Mental maths lesson 6: Add 2-digit numbers left to right · Set 950 · 40 questions
TalentJR

How to do it in your head (Tens first): Keep the first number as it is. Add the tens of the second number. Add the ones.

NameDateTime takenScore ___ / 40
  1. 1.37 + 58 =
  2. 2.47 + 74 =
  3. 3.70 + 53 =
  4. 4.58 + 52 =
  5. 5.68 + 41 =
  6. 6.85 + 78 =
  7. 7.72 + 62 =
  8. 8.64 + 45 =
  9. 9.62 + 26 =
  10. 10.64 + 83 =
  11. 11.69 + 35 =
  12. 12.25 + 47 =
  13. 13.88 + 31 =
  14. 14.57 + 32 =
  15. 15.58 + 34 =
  16. 16.82 + 13 =
  17. 17.69 + 14 =
  18. 18.75 + 36 =
  19. 19.87 + 71 =
  20. 20.27 + 15 =
  21. 21.57 + 72 =
  22. 22.40 + 69 =
  23. 23.48 + 53 =
  24. 24.79 + 34 =
  25. 25.70 + 62 =
  26. 26.51 + 15 =
  27. 27.69 + 42 =
  28. 28.30 + 37 =
  29. 29.22 + 22 =
  30. 30.37 + 52 =
  31. 31.49 + 31 =
  32. 32.78 + 16 =
  33. 33.30 + 65 =
  34. 34.37 + 22 =
  35. 35.88 + 41 =
  36. 36.34 + 58 =
  37. 37.78 + 55 =
  38. 38.23 + 53 =
  39. 39.40 + 61 =
  40. 40.76 + 61 =

Answer key

  1. 95
  2. 121
  3. 123
  4. 110
  5. 109
  6. 163
  7. 134
  8. 109
  9. 88
  10. 147
  11. 104
  12. 72
  13. 119
  14. 89
  15. 92
  16. 95
  17. 83
  18. 111
  19. 158
  20. 42
  21. 129
  22. 109
  23. 101
  24. 113
  25. 132
  26. 66
  27. 111
  28. 67
  29. 44
  30. 89
  31. 80
  32. 94
  33. 95
  34. 59
  35. 129
  36. 92
  37. 133
  38. 76
  39. 101
  40. 137

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